ISP1581
Hi-Speed USB peripheral controller
Philips Semiconductors
Table 73: Dynamic characteristics: analog I/O pins (D+, D−)[1]…continued
VCC = 4.0 to 5.5 V; VGND = 0 V; Tamb = −40 to +85 °C; CL = 50 pF; RPU = 1.5 kΩ on D+ to VTERM.; unless otherwise specified.
Symbol
Parameter
Conditions
Min.
Typ
Max
Unit
[2][3]
VCRS
output signal crossover voltage
1.3
-
2.0
V
High-speed mode
tHSR high-speed differential rise
with captive cable
with captive cable
500
500
-
-
-
-
ps
ps
time
tHSF
high-speed differential
fall time
Data source timing
Full-speed mode
[3]
[3]
tFEOPT
tFDEOP
source EOP width
see Figure 8
160
-
-
175
ns
ns
source differential data-to-EOP see Figure 8
transition skew
−2
+5
Receiver timing
Full-speed mode
[3]
[3]
[3]
[3]
tJR1
receiver data jitter tolerance to see Figure 9
next transition
−18.5
−9
-
-
-
-
+18.5
+9
ns
ns
ns
ns
tJR2
receiver data jitter tolerance for see Figure 9
paired transitions
tFEOPR
tFST
receiver SE0 width
accepted as EOP;
see Figure 8
width of SE0 during differential rejected as EOP;
transition see Figure 10
82
-
-
14
[1] Test circuit: see Figure 40.
[2] Excluding the first transition from Idle state.
[3] Characterized only, not tested. Limits guaranteed by design.
T
PERIOD
+3.3 V
crossover point
extended
crossover point
differential
data lines
0 V
differential data to
SE0/EOP skew
N × T + t
source EOP width: t
EOPT
receiver EOP width: t
EOPR
mgr776
PERIOD
DEOP
TPERIOD is the bit duration corresponding with the USB data rate.
Full-speed timing symbols have a subscript prefix ‘F’, low-speed timings a prefix ‘L’.
Fig 8. Source differential data-to-EOP transition skew and EOP width.
9397 750 13462
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data
Rev. 06 — 23 December 2004
51 of 79
NXP [ NXP ]
